SH2-91, SNR G65.3+5.7 -- HOO+RGB (Randy Lindstrom)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 12 Cyg · 12 phi Cyg · 9 Cyg · HD184150 · HD184719 · HD184738 · HD184907 · HD185150 · HD185174 · HD185268 · HD185332 · HD185603 · HD185735 · HD185755 · HD185756 · HD186097 · HD186098 · HD332347 · HD332348 · HD332356 · HD332357 · HD332358 · HD332359 · HD332360 · HD332361 · HD332362 · HD332363 · HD332364 · HD332365 · HD332369 · And 13 more.

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SH2-91, SNR G65.3+5.7 -- HOO+RGB

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SH2-91, SNR G65.3+5.7 -- HOO+RGB

The red H-alpha region below-center is listed in the Sharpless catalog as Sh2-91. The blue O3 filaments (processed to be much brighter than they would appear visually) are a portion of a larger supernova remnant G65.3+5.7 located in the constellation Cygnus about 2500 light-years from Earth. This image displays a small bright segment of the entire circular remnant, most of which is out of the frame — the entire bubble spanning over 4 degrees on the sky. The filament running through Sh2-91 is one of the remnant's major filaments located along the southern edge of the bubble. I uploaded an image of another portion of the remnant (associated with SH2-96) during the summer of 2021. The supernova shock front pushes its way outward through the galactic sea of H-alpha nebulosity embedded in a breathtakingly dense star field. Light from the exploding star is estimated to have reached Earth 25-30 thousand years ago.

Imaged with Voyager
NOVAC

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Status	Advanced success
Started	...
Astrometry.net job	5836155
PixInsight job	OVP6RN2BIMFPOTEHGD46WNHFONTCYRZ5
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	19h36m31s.55
RA (top/left)	19h37m51s.40
RA (top/right)	19h29m42s.55
RA (bottom/right)	19h35m14s.63
RA (bottom/left)	19h43m23s.29

Dec (center)	+30°03′33″.1
Dec (top/left)	+31°32′40″.7
Dec (top/right)	+29°43′57″.6
Dec (bottom/right)	+28°34′19″.4
Dec (bottom/left)	+30°21′52″.10

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SH2-91, SNR G65.3+5.7 -- HOO+RGB

SH2-91, SNR G65.3+5.7 -- HOO+RGB

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SH2-91, SNR G65.3+5.7 -- HOO+RGB

SH2-91, SNR G65.3+5.7 -- HOO+RGB

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